kjølemedie
Kjølemedie is a Norwegian term that translates to "refrigerant" in English. It refers to a substance or a mixture of substances used in refrigeration and air conditioning cycles to absorb heat from a low-temperature reservoir and release it to a high-temperature reservoir. This process is fundamental to how refrigerators, freezers, air conditioners, and heat pumps operate.
The working principle of a kølemedie involves a phase change. Typically, it circulates through a closed loop,
Historically, various substances have been used as kjølemedie, including ammonia, sulfur dioxide, and chlorofluorocarbons (CFCs) and